<template>
	<div>
		<!-- 面包屑导航区域 -->
		<el-breadcrumb separator-class="el-icon-arrow-right">
			<el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
			<el-breadcrumb-item>用户管理</el-breadcrumb-item>
			<el-breadcrumb-item>活动列表</el-breadcrumb-item>
		</el-breadcrumb>

		<!-- 卡片视图区域 -->
		<el-card>
			<!-- 搜索与添加区域 -->
			<el-row :gutter="25">
				<el-col :span="7">
					<el-input
						placeholder="请输入内容"
						v-model="queryInfo.query"
						clearable
						@clear="getUserList"
					>
						<el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
					</el-input>
				</el-col>
				<el-col :span="4">
					<el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
				</el-col>
			</el-row>

			<!-- 用户列表区域 -->
			<el-table :data="userlist" border stripe>
				<el-table-column type="index" label="序号" width="60px"></el-table-column>
				<el-table-column label="姓名" prop="username"></el-table-column>
				<el-table-column label="邮箱" prop="email"></el-table-column>
				<el-table-column label="电话" prop="mobile"></el-table-column>
				<el-table-column label="角色" prop="role_name"></el-table-column>
				<el-table-column label="状态">
					<!-- 作用域插槽的使用 -->
					<template slot-scope="scope">
						<el-switch
							v-model="scope.row.mg_state"
							@change="userStateChanged(scope.row)"
						></el-switch>
					</template>
				</el-table-column>
				<el-table-column label="操作">
					<template slot-scope="scope">
						<!-- 修改按钮 -->
						<el-tooltip effect="dark" content="修改" placement="top" :enterable="false">
							<el-button
								type="primary"
								icon="el-icon-edit"
								size="mini"
								@click="showEditDialog(scope.row.id)"
							></el-button>
						</el-tooltip>
						<!-- 删除按钮 -->
						<el-tooltip effect="dark" content="删除" placement="top" :enterable="false">
							<el-button
								type="danger"
								icon="el-icon-delete"
								size="mini"
								@click="removeUserById(scope.row.id)"
							></el-button>
						</el-tooltip>
						<!-- 分配角色按钮 -->
						<el-tooltip effect="dark" content="角色分配" placement="top" :enterable="false">
							<el-button
								type="warning"
								icon="el-icon-setting"
								size="mini"
								@click="setRole(scope.row)"
							></el-button>
						</el-tooltip>
					</template>
				</el-table-column>
			</el-table>

			<!-- 分页区域 -->
			<el-pagination
				@size-change="handleSizeChange"
				@current-change="handleCurrentChange"
				:current-page="queryInfo.pagenum"
				:page-sizes="[1, 2, 5, 10]"
				:page-size="queryInfo.pagesize"
				layout="total, sizes, prev, pager, next, jumper"
				:total="total"
			></el-pagination>
		</el-card>

		<!-- 添加用户的对话框 -->
		<el-dialog
			title="添加用户"
			:visible.sync="addDialogVisible"
			width="50%"
			:before-close="handleClose"
			@close="addDialogClosed"
		>
			<!-- 内容主体区域 -->
			<el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
				<el-form-item label="用户名:" prop="username">
					<el-input v-model="addForm.username"></el-input>
				</el-form-item>
				<el-form-item label="密码:" prop="password">
					<el-input v-model="addForm.password"></el-input>
				</el-form-item>
				<el-form-item label="邮箱:" prop="email">
					<el-input v-model="addForm.email"></el-input>
				</el-form-item>
				<el-form-item label="手机号:" prop="mobile">
					<el-input v-model="addForm.mobile"></el-input>
				</el-form-item>
			</el-form>
			<!-- 底部区域 -->
			<span slot="footer" class="dialog-footer">
				<el-button @click="addDialogVisible = false">取 消</el-button>
				<el-button type="primary" @click="addUser">确 定</el-button>
			</span>
		</el-dialog>

		<!-- 修改用户的对话框 -->
		<el-dialog
			title="修改用户"
			:visible.sync="editDialogVisible"
			width="50%"
			@close="editDialogClosed"
		>
			<!-- 内容主体区域 -->
			<el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
				<el-form-item label="用户名:">
					<el-input v-model="editForm.username" disabled></el-input>
				</el-form-item>
				<el-form-item label="邮箱:" prop="email">
					<el-input v-model="editForm.email"></el-input>
				</el-form-item>
				<el-form-item label="手机号:" prop="mobile">
					<el-input v-model="editForm.mobile"></el-input>
				</el-form-item>
			</el-form>
			<!-- 底部区域 -->
			<span slot="footer" class="dialog-footer">
				<el-button @click="editDialogVisible = false">取 消</el-button>
				<el-button type="primary" @click="editUserInfo">确 定</el-button>
			</span>
		</el-dialog>

		<!-- 分配角色的对话框 -->
		<el-dialog
			title="分配角色"
			:visible.sync="setRoleDialogVisible"
			width="50%"
			@close="setRoleDialogClosed"
		>
			<div>
				<p>当前的用户： {{ userInfo.username }}</p>
				<p>当前的角色： {{ userInfo.role_name }}</p>
				<p>
					分配新角色：
					<el-select v-model="selectedRoleId" placeholder="请选择">
						<el-option
							v-for="item in roleList"
							:key="item.id"
							:label="item.roleName"
							:value="item.id"
						></el-option>
					</el-select>
				</p>
			</div>
			<span slot="footer" class="dialog-footer">
				<el-button @click="setRoleDialogVisible = false">取消</el-button>
				<el-button type="primary" @click="saveRoleInfo">确定</el-button>
			</span>
		</el-dialog>
	</div>
</template>

<script>
export default {
	data() {
		// 验证邮箱的规则
		var checkEmail = (rule, value, callback) => {
			// 验证邮箱的正则表达式
			const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/;
			if (regEmail.test(value)) {
				// 合法的邮箱
				return callback();
			}
			callback(new Error('请输入正确的邮箱！'));
		};
		// 验证手机号的规则
		var checkMobile = (rule, value, callback) => {
			// 验证手机号的正则表达式
			const regMobil = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/;
			if (regMobil.test(value)) {
				return callback();
			}
			callback(new Error('请输入正确的手机号！'));
		};

		return {
			// 获取用户列表的参数对象
			queryInfo: {
				query: '',
				// 当前的页数
				pagenum: 1,
				// 当前每页显示多少条数据
				pagesize: 5
			},
			userlist: [],
			total: 0,
			// 控制添加用户对话框的显示与隐藏
			addDialogVisible: false,
			// 控制修改用户对话框的显示与隐藏
			editDialogVisible: false,
			// 控制分配角色对话框的显示与隐藏
			setRoleDialogVisible: false,
			// 添加用户的表单数据
			addForm: {
				username: '',
				password: '',
				email: '',
				mobile: ''
			},
			// 添加表单的验证规则对象
			addFormRules: {
				// 用户名验证规则
				username: [
					{
						required: true,
						message: '请输入用户名！',
						trigger: 'blur'
					},
					{
						min: 3,
						max: 10,
						message: '用户名的长度为3到10个字符之间！',
						trigger: 'blur'
					}
				],
				// 密码验证规则
				password: [
					{
						required: true,
						message: '请输入密码！',
						trigger: 'blur'
					},
					{
						min: 6,
						max: 15,
						message: '密码的长度为6到15个字符之间！',
						trigger: 'blur'
					}
				],
				// 邮箱验证规则
				email: [
					{
						required: true,
						message: '请输入邮箱！',
						trigger: 'blur'
					},
					{
						validator: checkEmail,
						trigger: 'blur'
					}
				],
				// 手机号验证规则
				mobile: [
					{
						required: true,
						message: '请输入手机号！',
						trigger: 'blur'
					},
					{
						validator: checkMobile,
						trigger: 'blur'
					}
				]
			},
			// 查询到的用户信息对象
			editForm: {},
			// 修改表单的验证规则对象
			editFormRules: {
				email: [
					{ required: true, message: '请输入用户邮箱', trigger: 'blur' },
					{ validator: checkEmail, trigger: 'blur' }
				],
				mobile: [
					{ required: true, message: '请输入用户手机号', trigger: 'blur' },
					{ validator: checkMobile, trigger: 'blur' }
				]
			},
			// 需要被分配角色的用户信息
			userInfo: {},
			// 所有角色的数据列表
			roleList: [],
			// 已选中的角色ID值
			selectedRoleId: ''
		};
	},

	// 生命周期函数
	created() {
		this.getUserList();
	},

	methods: {
		// 获取用户列表
		async getUserList() {
			const { data: res } = await this.$http.get('users', {
				params: this.queryInfo
			});
			if (res.meta.status !== 200) {
				return this.$message.error('获取用户列表失败！');
			}
			this.userlist = res.data.users;
			this.total = res.data.total;
		},

		// 监听pagesize改变的事件
		handleSizeChange(newSize) {
			this.queryInfo.pagesize = newSize;
			this.getUserList();
		},

		//监听页码值改变的事件
		handleCurrentChange(newPage) {
			this.queryInfo.pagenum = newPage;
			this.getUserList();
		},

		//监听switch开关状态的改变
		async userStateChanged(userinfo) {
			const { data: res } = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`);
			if (res.meta.status !== 200) {
				userinfo.mg_state = !userinfo.mg_state;
				return this.$message.error('更新用户状态失败！');
			}
			this.$message.success('更新用户状态成功！');
		},

		//监听添加用户对话框的关闭事件
		addDialogClosed() {
			this.$refs.addFormRef.resetFields();
		},

		//点击确定按钮添加新用户
		addUser() {
			this.$refs.addFormRef.validate(async valid => {
				if (!valid) return;
				// 校验成功则可以发起添加用户的网络请求
				const { data: res } = await this.$http.post('users', this.addForm);
				if (res.meta.status !== 201) {
					this.$message.error('添加用户失败!');
				}
				this.$message.success('添加用户成功！');
				// 隐藏添加用户的对话框
				this.addDialogVisible = false;
				// 重新获取用户列表数据
				this.getUserList();
			});
		},

		// 点击弹出修改用户的对话框
		async showEditDialog(id) {
			const { data: res } = await this.$http.get('users/' + id);
			if (res.meta.status !== 200) {
				return this.$message.error('查询用户信息失败!');
			}
			this.editForm = res.data;
			this.editDialogVisible = true;
		},

		// 监听修改用户对话框的关闭时间
		editDialogClosed() {
			this.$refs.editFormRef.resetFields();
		},

		// 修改用户信息并提交
		editUserInfo() {
			this.$refs.editFormRef.validate(async valid => {
				if (!valid) return;
				// 发起修改用户信息的数据请求
				const { data: res } = await this.$http.put('users/' + this.editForm.id, {
					email: this.editForm.email,
					mobile: this.editForm.mobile
				});
				if (res.meta.status !== 200) {
					return this.$message.error('修改用户信息失败！');
				}
				// 关闭对话框
				this.editDialogVisible = false;
				// 刷新数据列表
				this.getUserList();
				// 提示修改成功
				this.$message.success('修改用户信息成功！');
			});
		},

		//通过ID删除用户信息
		async removeUserById(id) {
			// 弹框询问是否删除
			const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
				confirmButtonText: '确定',
				cancelButtonText: '取消',
				type: 'warning'
			}).catch(err => err);
			// 如果用户确认删除，则返回值为字符串‘confirm’
			// 如果用户取消了删除，则返回值为字符串‘cancel’
			if (confirmResult !== 'confirm') {
				return this.$message.info('已取消了删除');
			}
			const { data: res } = await this.$http.delete('users/' + id);
			if (res.meta.status !== 200) {
				return this.$message.error('删除用户信息失败！');
			}
			this.$message.success('删除用户信息成功!');
			this.getUserList();
		},

		// 展示分配角色的对话框
		async setRole(userInfo) {
			this.userInfo = userInfo;
			// 在展示分配角色的对话框之前，获取所有的角色列表
			const { data: res } = await this.$http.get('roles');
			if (res.meta.status !== 200) {
				this.$message.error('获取角色列表失败！');
			}
			this.roleList = res.data;
			this.setRoleDialogVisible = true;
		},

		// 点击按钮分配角色
		async saveRoleInfo() {
			if(!this.selectedRoleId) {
				return this.$message.error('请选择要分配的角色！');
			}
			const {data: res} = await this.$http.put(`users/${this.userInfo.id}/role`, {
				rid: this.selectedRoleId
			});
			if(res.meta.status !== 200) {
				return this.$message.error('更新角色失败！');
			}
			this.$message.success('更新角色成功！');
			// 刷新用户列表
			this.getUserList();
			// 关闭分配角色对话框
			this.setRoleDialogVisible = false;
		},

		// 监听分配角色对话框的关闭事件
		setRoleDialogClosed() {
			this.selectedRoleId = '';
			this.userInfo = {};
		}
	}
};
</script>

<style lang="less" scoped>
</style>